Russia's President Vladimir Putin during a video conference meeting on the COVID-19 coronavirus situation in Russia, at Novo-Ogaryovo residence.

President Vladimir Putin said on Friday the scale of the clear-up operation after a huge fuel spill in the Arctic was unprecedented for Russia, with Greenpeace estimating the environmental damage to waters in the region at $1.4 billion. 

A vast fuel tank lost pressure on May 29 and unleashed 21,000 tonnes of diesel into rivers and subsoil near the city of Norilsk, an incident that Greenpeace has compared to the devastating 1989 Exxon Valdez oil spill off Alaska.